Air treatment device



FIGS. 1-7 depict an air treatment device; and,

FIG. 1 is a front and side perspective view thereof;

FIG. 2 is a rear side elevational view thereof;

FIG. 3 is a front side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The portions of the depicted design indicated in broken lines form no part of the claimed design. 

CLAIM The ornamental design for the air treatment device, as shown and described. 